internals/src/EflSharp/EflSharp/efl/eina_common.cs

   1 #pragma warning disable 1591
   2
   3 using System;
   4 using System.Text;
   5 using System.Runtime.InteropServices;
   6
   7 namespace Eina
   8 {
   9
  10 namespace Callbacks
  11 {
  12
  13 public delegate int EinaCompareCb(IntPtr data1, IntPtr data2);
  14 public delegate void EinaFreeCb(IntPtr data);
  15
  16 }
  17
  18 internal static class NativeCustomExportFunctions
  19 {
  20     [DllImport(efl.Libs.CustomExports)] public static extern void
  21         efl_mono_native_free(IntPtr ptr);
  22     [DllImport(efl.Libs.CustomExports)] public static extern void
  23         efl_mono_native_free_ref(IntPtr ptr);
  24     [DllImport(efl.Libs.CustomExports)] public static extern IntPtr
  25         efl_mono_native_alloc(uint count);
  26     [DllImport(efl.Libs.CustomExports)] public static extern IntPtr
  27         efl_mono_native_memset(IntPtr ptr, uint fill, uint count);
  28     [DllImport(efl.Libs.CustomExports)] public static extern IntPtr
  29         efl_mono_native_alloc_copy(IntPtr val, uint size);
  30     [DllImport(efl.Libs.CustomExports)] public static extern IntPtr
  31         efl_mono_native_strdup(string str);
  32
  33     [DllImport(efl.Libs.CustomExports)] public static extern IntPtr
  34         efl_mono_native_ptr_compare_addr_get();
  35     [DllImport(efl.Libs.CustomExports)] public static extern IntPtr
  36         efl_mono_native_str_compare_addr_get();
  37
  38     [DllImport(efl.Libs.CustomExports)] public static extern IntPtr
  39         efl_mono_native_free_addr_get();
  40     [DllImport(efl.Libs.CustomExports)] public static extern IntPtr
  41         efl_mono_native_efl_unref_addr_get();
  42 }
  43
  44 /// <summary>Wrapper around native memory DllImport'd functions</summary>
  45 public static class MemoryNative
  46 {
  47     public static void Free(IntPtr ptr)
  48     {
  49         NativeCustomExportFunctions.efl_mono_native_free(ptr);
  50     }
  51
  52     public static void FreeRef(IntPtr ptr)
  53     {
  54         NativeCustomExportFunctions.efl_mono_native_free_ref(ptr);
  55     }
  56
  57     // This public api uses int as Marshal.SizeOf return an int instead of uint.
  58     public static IntPtr Alloc(int count)
  59     {
  60         return NativeCustomExportFunctions.efl_mono_native_alloc(Convert.ToUInt32(count));
  61     }
  62
  63     public static void Memset(IntPtr ptr, int fill, int count)
  64     {
  65         NativeCustomExportFunctions.efl_mono_native_memset(ptr, Convert.ToUInt32(fill), Convert.ToUInt32(count));
  66     }
  67
  68     public static IntPtr AllocCopy(IntPtr ptr, int count)
  69     {
  70         return NativeCustomExportFunctions.efl_mono_native_alloc_copy(ptr, Convert.ToUInt32(count));
  71     }
  72
  73     public static IntPtr StrDup(string str)
  74     {
  75         return NativeCustomExportFunctions.efl_mono_native_strdup(str);
  76     }
  77
  78     // IntPtr's for some native functions
  79     public static IntPtr PtrCompareFuncPtrGet()
  80     {
  81         return NativeCustomExportFunctions.efl_mono_native_ptr_compare_addr_get();
  82     }
  83
  84     public static IntPtr StrCompareFuncPtrGet()
  85     {
  86         return NativeCustomExportFunctions.efl_mono_native_str_compare_addr_get();
  87     }
  88
  89     public static IntPtr FreeFuncPtrGet()
  90     {
  91         return NativeCustomExportFunctions.efl_mono_native_free_addr_get();
  92     }
  93
  94     public static IntPtr EflUnrefFuncPtrGet()
  95     {
  96         return NativeCustomExportFunctions.efl_mono_native_efl_unref_addr_get();
  97     }
  98 }
  99
 100 public static class PrimitiveConversion
 101 {
 102    public static T PointerToManaged<T>(IntPtr nat)
 103    {
 104        if (nat == IntPtr.Zero)
 105        {
 106            Eina.Log.Error("Null pointer for primitive type.");
 107            return default(T);
 108        }
 109
 110        var w = Marshal.PtrToStructure<T>(nat);
 111        return w;
 112    }
 113
 114    public static IntPtr ManagedToPointerAlloc<T>(T man)
 115    {
 116        IntPtr ptr = Marshal.AllocHGlobal(Marshal.SizeOf<T>());
 117        Marshal.StructureToPtr(man, ptr, false);
 118        return ptr;
 119    }
 120 }
 121
 122 public static class StringConversion
 123 {
 124     public static IntPtr ManagedStringToNativeUtf8Alloc(string managedString)
 125     {
 126         if (managedString == null)
 127         {
 128             return IntPtr.Zero;
 129         }
 130
 131         byte[] strbuf = Encoding.UTF8.GetBytes(managedString);
 132         IntPtr native = MemoryNative.Alloc(strbuf.Length + 1);
 133         Marshal.Copy(strbuf, 0, native, strbuf.Length);
 134         Marshal.WriteByte(native + strbuf.Length, 0); // write the terminating null
 135         return native;
 136     }
 137
 138     public static string NativeUtf8ToManagedString(IntPtr pNativeData)
 139     {
 140         if (pNativeData == IntPtr.Zero)
 141         {
 142             return null;
 143         }
 144
 145         int len = 0;
 146         while (Marshal.ReadByte(pNativeData, len) != 0)
 147         {
 148             ++len;
 149         }
 150
 151         byte[] strbuf = new byte[len];
 152         Marshal.Copy(pNativeData, strbuf, 0, strbuf.Length);
 153         return Encoding.UTF8.GetString(strbuf);
 154     }
 155 }
 156
 157 /// <summary>Enum to handle resource ownership between managed and unmanaged code.</summary>
 158 public enum Ownership
 159 {
 160     /// <summary> The resource is owned by the managed code. It should free the handle on disposal.</summary>
 161     Managed,
 162     /// <summary> The resource is owned by the unmanaged code. It won't be freed on disposal.</summary>
 163     Unmanaged
 164 }
 165
 166 }